package thread;

public class SyncDemo {
    public static void main(String[] args) {
        Table table = new Table();
        Thread t1 = new Thread(){
            @Override
            public void run() {
                while(true){
                    int bean = table.getBean();
                    Thread.yield();
                    System.out.println(getName()+":"+bean);
                }
            }
        };

        Thread t2 = new Thread(){
            @Override
            public void run() {
                while(true){
                    int bean = table.getBean();
                    Thread.yield();
                    System.out.println(getName()+":"+bean);
                }
            }
        };
        t1.start();
        t2.start();
    }
}
class Table{
    private int beans = 20;
    public synchronized int getBean(){
        if(beans==0){
            throw new RuntimeException("没有豆子了");
        }
        Thread.yield();//用来模拟线程执行到这里CPU时间片用完了
        return beans--;


    }
}